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+----- Thread: IWSignaturePad demo generates an error (/thread-2811.html)
IWSignaturePad demo generates an error - jeroen.rottink - 07-27-2022
Hi Alexandre,
Tested IWSignaturePad for the first time but see an DevTools console error.
Code:
(index):53 Uncaught TypeError: Cannot read properties of null (reading 'getContext')
at Initialize ((index):53:15)
at HTMLDocument.<anonymous> ((index):98:23)
var c=IW.$("").getContext("2d");c.fillStyle="#FFFFFF";The property HTMLName for the control is empty in TIWCustomCanvas.AddContext() when called from TIWCustomCanvas.InitControl()
Tested with IW15.2.64 running Chrome.
Update: Also when using the upload button on a 'big or complex' signature, the exception EIdReadLnMaxLineLengthExceeded is raised.
RE: IWSignaturePad demo generates an error - Alexandre Machado - 07-28-2022
Thanks for reporting this.
The JS error has been fixed, and the Indy issue needs to be configured accordingly:
program IWSignaturePad;
uses
IWRtlFix,
IWStart,
InIOHandler, // <- add this unit
Unit27 in 'Unit27.pas' {IWForm27: TIWAppForm},
ServerController in 'ServerController.pas' {IWServerController: TIWServerControllerBase},
UserSessionUnit in 'UserSessionUnit.pas' {IWUserSession: TIWUserSessionBase};
{$R *.res}
begin
IdMaxLineLengthDefault := 128 * 1024; // <- Increase to something like 64 or 128 kb
TIWStart.Execute(True);
end.